3/4" plywood or MDF top
1/2" plywood sides and middle supports
1/4" or 1/2" plywood bottom
Kreg pocket jig
tracksaw or table saw
Cut the top to 4x6. Set your grid to the sides of the plywood to center top file. Place top file on top and cut using helix cut for all the holes. Do the same for the sides. Screw sides together, screw top on using pocket screws.